I tried, and it seems to work here. If -31.4589 cents from 440 isn't what you want adjust accordingly.
Digging around in the "gui_settings.xml" I see where you could add the option to the menu. I'm guessing you'd add just below this line: <OptionItem name=" La Scala in Milan 451 (18th)" value="42...
Ah, I'd check over here....if the tweak is not already on the forum, I'd imagine you'll get a quick answer. https://www.plogue.com/phpBB3/viewforum.php?f=34&sid=c71b80644d790c004028949a2290c341
I think you can get loads of SCL tables/files from here as well: http://www.huygens-fokker.org/scala/downloads.html
This? https://www.reddit.com/r/abletonlive/comments/4owa3z/here_ya_go_scala_files_for_pythagorean_tuning/ You'd place the scl file to your ARIA Player\Scales directory.
Perhaps this is what you are looking for? https://usermanuals.garritan.com/ARIAPlayer/Content/tuning.htm
If you NEED to automate these controls it is possible, but you'll need to edit the sfz file for the instrument and assign an alternative controller. The catch is that the dial in the ARIA control ...
Oops, yes, Sonar.
No problem.... I'm still not totally happy with the VDL kit. It's not dynamic enough for my taste, and there are enough decent samples included in COMB2 to get a much more expressive kit. Hopef...
Here is a version that fixes the Hi-Hat issue. https://drive.google.com/open?id=0B-9pjh4Xl8gsTHVDa1BvdTlTUEk I've also included an option to extend the kit to a full GM2 compliment, so you'd get ...